Cord-terminal for electric wires



A. L. EMENS.-

com) TERMINAL FOR ELECTRIC WIRES.

APPLICATION FILED OCT. I4,vl916.

Patented Apr. 6, 1920.

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expensive metal is wasted.

UNITED STATES PATENT OFFICE; 4

' ALBERT L. EMENS, 0F SPRINGFIELD, ILLINOIS, ASSIGNOIR- '10 SANGAMO ELESTRIC COMPANY, QF'SPRINGFIELD, ILLINOIS,- A. CORPORATION OF ILLINOIS.

To all whom it'may concern: p

Be it known that I, ALBERT L. EMENS, a citizen of the United States, and a resident of Springfield, in the county of Sangamon,

- State of Illinois, have invented certainnew and useful Improvements in Cord-Terminals for Electric Wires, of which the following is a specification,,reference being had to the accompanying. rawings.

My invention r lates to cord terminals for electric wires. Such terminals have heretofore been usually made of solid brass rods, drilled out to receive a wire conductor and having a threaded hole which intersects such conductor socket and receives a clamping screw. A terminal of that description is comparatively expensive. Eto manufacture not only because there is an unnecessarily large amount of metal in the finished terminal, but also because in the process of manufacture a lar e amount of he object of my invention is to provide a new and improved terminal which may be manufactured very cheaply but which will be equally as eflicient as the more expensive terminals generally in use at the present time. I ac- A nomplish my object as illustrated in the accompanying drawings and as hereinafter described. That which I rdgard as new set forth in the claims.

'Inthe accompanying drawings,-

Figure 1 is an enlarged view showing my improved terminal in a form designed es pecially for use in electric meters;

Fig. 2 is an'edge view of the=terminal as shown'inFig. 1;- 5 T Fig. 3 is a longitudinal section on line 33'of Fig. 1;

Fi 4 is an end view-of the terminal,

showing it in the position shown in Fig. 2;

Fig. 5 is a plan view of the blank before being folded;

Fig.6 is a'view of the block inserted at the fold of the blank; and

Fig. 7 is a view of the partially-folded blank, showing the block in place. My improved terminal comprises a cylin drical portion composed of two semi-cylindrical members 8+9 connected at one end by 'a flattened folded portion 10, which is integral with said members and embraces a block 11. The members 89 are held with their side margins closely in contact with each other by a sleeve or collar 12 Specification of Letters Patent.

which it may come in .portion 10 also may CORD-TERMINAL FOR ELECTRIC WIRES.

- Patented Apr. 6, 1920.

Application filed October 15, 1916. Serial No. 125,691.

which fits closely upon them and is providedv with a binding screw 13 which works in screw-threads in the collar 12 and passes through a hole 14.- in one of the members 8 or 9, as shown in Fig. 3. The collar 12 is bored eccentrically, asshown in Figs. 3 and in the thick- 4:, and the transverse threaded (passage which receives the screw 13 is place ened portion of said collar, so that the screw has a 1 more extended engagement with the collar than it would have if the bore of the latter which receives the members 8-9 were placed concentrically. The block 11 and the flattened portions 10 at the upper and lower sides of said block are provided with alined.

holes 15-'-1617 which may be provided with screw-threads, if desired, for securing the terminal in place. Preferably, the hole 16 in the block 11 only is threaded. The purpose of said block is to strengthen the folded portion of the terminal and provide a substantial supportfor the attaching device, which. may suitable device. lar, which is fitted tightlyupon the members 8-9 and is placed near the folded end thereof, as illustrated in the drawings:

This collar or sleeve may, if desired, be made of insulating material, as shown in F ig. 3, to provide for insulating the terbe a screw, a bolt, or other 18 indicates a second 001- mmal from the plate or other part with also serves to assist in binding the members 8-9 tightly'together, particularly adjacent to the block 10, thereby preventing said block from getting out of place when there is no bolt in the holes 15-16-17.

contact. This sleeve It will be apparent that only the blank 5 from which the members 8, 9, and 10 are formed need be made of copper or brass, the other .partsbeing made of any sultable material. For example, the collar 12 and the block 11 may be made of steel, preferably nickel plated, and the collar or sleeve 18 of insulatin material. The screw 13 may also be made of any suitable material, since the conductors to which the termlnal is attached come directly in contact with the members 8, 9 and 10. For example, the end of a wire conductor is inserted 1n the socket formed by the members 8-9 and is clamped firmlyv against the inner surface of the member 9 by the screw 13. The folded desire to secure by Letters connected. None of the strain, either of the clamping screw 13 or of the bolt or screw which engages the block 11, 1s sustained by the thin metal of which the terminal is prinsultable blank of the form shown in Fig..

5-2. 8., having a central flat portion and semi-cylindrical end portions. may be made from -a split tube by flattening the intermediate portion thereof, "or from a flat strip by rounding the end portions thereof. The holes 14, 15 and 17 are then made, after which the blank is folded, intermediately of the .flattened portion, over the block 11, which is placed in the position shown n Fig 7, so that when the fold is completed 1t l1es between the opposed inner faces of the folded portion 10 and is thereby held securely 1n place. The semi-cylindrical members having been pressed together so that thelr side margins abut to form a tube closed at one end,,the sleeve 18 is slipped upon the tube and moved down toward the flattenedend portion thereof, as shown in Figs. 1, 2 and 3. The sleeve 12 isthen applied to the tube,

verse passage through said sleeve registers with the hole 1 1. As shown in Fig. 6, one of the sides of the block 11 is rounded to conform to the shape of those portlons of the blank where the semi-cylindrical members merge into ,the flat intermediate portion. By this arrangement the block is secured against displacement.

That which I claim as m invention, and

atent, 1s 1. A cord terminal comprising two integral semi-cylindrical sheet metal members folded over one upon the other with their This blank side margins. abutting to form a tube, a sleeve fitted upon said members and serving to bind them together, and a binding screw mounted in said sleeve and adapted to be projected into said tube to clamp a conductor therein.

2. A cord terminal comprising two integral semi-cylindrical members folded over one upon the other with their side margins abutting to form a tube, a separate block fitted within the fold of said members, said block having a bore registerin with perforations in the overlying portions of said members, and means for binding said foldseparate block fitted within the fold of said members and having a screwthreaded bore, said members being perforated in alinement with the bore of said block. and the screw 13 inserted when the trans- I 5. A cord terminal comprising two semicylindrical sheet metal members arranged with their side margins abutting to form'a tube open at one end, the opposite end portions of said members being integrally connected with a substantially flat folded portion, a separate .block within such folded portion, said block having a screw-threaded borle registering with perforations in said folded portion, the side of said block adjacent to said semi-cylindrical members being rounded, and means for holding said semicylindrical members to ether.

' RT LQEMENS. 

